The largest banks of the United States posted strong earnings results in the ongoing earnings season. This happened despite trade tensions. While retail investors may find the volatility worrying, particularly those needing to liquidate equities or seeking quick gains, Wall Street banks benefited.In the second quarter, the five largest U.S. banks reported a collective 17% rise in trading revenues and a 7% increase in investment banking revenues compared to the same quarter last year (read: Banks Lift Payout ...